On Sun, Aug 11, 2019 at 07:08:01PM -0500, Gustavo A. R. Silva wrote:

Add suffix ULL to constant 1000 in order to avoid a potential integer overflow and give the compiler complete information about the proper arithmetic to use. Notice that this constant is being used in a context that expects an expression of type u64, but it's currently evaluated using 32-bit arithmetic.

Addresses-Coverity-ID: 1485796 ("Unintentional integer overflow") Fixes: ed22c6d9304d ("drm/komeda: Use drm_display_mode "crtc_" prefixed hardware timings") Signed-off-by: Gustavo A. R. Silva gustavo@embeddedor.com

---

drivers/gpu/drm/arm/display/komeda/komeda_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c index fa9a4593bb37..624d257da20f 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c @@ -27,7 +27,7 @@ static void komeda_crtc_update_clock_ratio(struct komeda_crtc_state *kcrtc_st) return; }

• pxlclk = kcrtc_st->base.adjusted_mode.crtc_clock * 1000;

• pxlclk = kcrtc_st->base.adjusted_mode.crtc_clock * 1000ULL; aclk = komeda_crtc_get_aclk(kcrtc_st);

  kcrtc_st->clock_ratio = div64_u64(aclk << 32, pxlclk);

Thank you for the patch.

Reviewed-by: James Qian Wang (Arm Technology China) james.qian.wang@arm.com